Application crashed while importing songs from Ipod library in iPhone for iOs 5.0

I have solved this issues,

just comment out this line

 fileName = [[fileName stringByAppendingString:@"-"] stringByAppendingString:[item valueForProperty:MPMediaItemPropertyArtist]];

because for some songs there is null artist so it's crash...................

This is because you are using some songs has artist name while some with blank artist name, so you are trying to append blank name in string that's why app going to crash.

Hope you unserstand what i say...